Renaming elements in text editor does not work

[lwrage]

The AADL text editor has an operation to rename identifiers (context menu 'Rename Element' or Alt-Shift-r). This renames the identifier where it is declared but leaves all other occurrences unchanged.
child of #1371
depends on #1466

[lwrage]

Works in part with the fix for #360. Need to add renaming of package/classifier at the end of the declaration.

[Korny666]

Renaming is not working consistently.

[lwrage]

What to do about references to component implementations when the component type is renamed?

• Investigate xtext handling of qualifies name segments.
• Maybe handle when adding name at end of classifier.

[lwrage]

Mark occurrences now marks type names in references to implementations. Rename refactoring is completely different. First need to create the linked editing regions for the editor, then adapt the actual renaming.

[lwrage]

And there are references from annexes and external languages into the core language. It is not clear how these need to be handled.

[lwrage]

Xtext 2.13 introduced improved support for semantic editing that may make it easier to implement component type renaming (see https://typefox.io/xtext-2-13-0-released-semantic-editing-made-easy). Postponing this issue until after we've updated to Photon with the newer Xtext.

[lwrage]

Look at IDependentElementsCalculator for renaming component implementations.

[lwrage]

There is a way to trigger subsequent renamings, see http://koehnlein.blogspot.com/2011/06/rename-refactoring-in-xtext-20.html

[lwrage]

It works with a dependent elements calculator. Declaration updates must also rename affected implementations, references are updated automatically.